Tag Archives: Catalyst 4948E

Cisco Catalyst 4900 series switches were once the most widely deployed ToR (top-of-rack) switches in this industry. This post will introduce the detailed compatible transceivers information for Cisco Catalyst 4948E switch.

Downlink Connection for Cisco Catalyst 4948E Switch
The 48 ports on the front panel of Catalyst 4948E can support downlink of 10/100/1000M. The great advantage of these ports is that they can configure themselves to operate at the speed of the attached devices. If the attached devices do not support auto-negotiation, the speed and duplex parameters can be set explicitly. A network cable with a RJ-45 plug at both end can connect Cisco Catalyst 4948E switch to the downlink target devices.

Uplink Connection for Cisco Catalyst 4948E Switch
The four uplink SFP/SFP+ ports on Cisco Catalyst 4948E can support both copper and fiber optic transmission of 1G/10G by using different modules and cables. In addition, these ports can also support CWDM SFP transceivers and DWDM SFP transceivers. The following part will introduce the details about compatible transceivers for Cisco Catalyst 4948E switch.